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Finding the Fourth Proportional to 289,618.60, 434,468.22 and 89,954.20

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Solution

The fourth proportional to 289,618.60, 434,468.22 and 89,954.20 is: 134,943.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,618.60 : 434,468.22 = 89,954.20 : x
  2. Step 2: Convert to fraction form
    289,618.60/434,468.22 = 89,954.20/x
  3. Step 3: Cross multiply
    289,618.60x = 434,468.22 × 89,954.20
  4. Step 4: Simplify right side
    289,618.60x = 39,082,241,155.52
  5. Step 5: Solve for x
    x = 39,082,241,155.52/289,618.60
  6. Step 6: Final answer
    x = 134,943.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.